ACC Converters

Wondering if anyone is familier with ACC converters. Are they as good as they claim or just an average performing converter? Im from australia and own an LS1 Commodore SS with a 4L60E transmission. Down here the two brands im concidering are dominator and TCE but im guessing there are probably better converters in the states...

I´m allso wandering if i should buy from them

They are Welded,so that´s a plus for long life

Anyone using them for a long time?

id pay the extra to get a vig shipped to me, no matter where in the world i am.